Register
What is an equation for the linear function whose graph contains the points (9, 7) and (4, −8) ? Enter your answers in the boxes. y−____ =_____ (x−9)
33.9k views
4 votes
What is an equation for the linear function whose graph contains the points (9, 7) and (4, −8) ? Enter your answers in the boxes.

y−____ =_____ (x−9)

User Saumya Rastogi
by
8.2k points

2 Answers

0 votes
slope = (7 + 8)/(9 -4) = 15/5 = 3

equation

y - 7 = 3(x - 9)

hope it helps
User Aseolin
by
9.2k points
2 votes

\bf \begin{array}{ccccccccc} &&x_1&&y_1&&x_2&&y_2\\ % (a,b) &&(~{{ 9}} &,&{{ 7}}~) % (c,d) &&(~{{ 4}} &,&{{ -8}}~) \end{array} \\\\\\ % slope = m slope = {{ m}}\implies \cfrac{\stackrel{rise}{{{ y_2}}-{{ y_1}}}}{\stackrel{run}{{{ x_2}}-{{ x_1}}}}\implies \cfrac{-8-7}{4-9}\implies \cfrac{-15}{-5}\implies \cfrac{3}{1}\implies 3


\bf \stackrel{\textit{point-slope form}}{y-{{ y_1}}={{ m}}(x-{{ x_1}})}\implies y-7=3(x-9)
User Jhilom
by
8.4k points
Ask a Question
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

9.5m questions

12.2m answers

Other Questions

What is .725 as a fraction
How do you estimate of 4 5/8 X 1/3
A bathtub is being filled with water. After 3 minutes 4/5 of the tub is full. Assuming the rate is constant, how much longer will it take to fill the tub?
Write words to match the expression. 24- ( 6+3)
A dealer sells a certain type of chair and a table for $40. He also sells the same sort of table and a desk for $83 or a chair and a desk for $77. Find the price of a chair, table, and of a desk.
Link Copied!